Tool



April 22, 1941. 1 l ADAM?, 2,239,072

TOOL

Filed March 2.

INVENTOR. Joss/H Hon/m5 ATTORNEYS' Patented Apr. 22, 1941 TOOL Joseph L.Adams, Cleveland, Ohio, assgnor to The Dill Manufacturing Company,Cleveland, Ollio, a corporation of Ohio Application March 2, 1939,Serial No. 259,427

(o1. sl-ssi 2 Claims.

The present invention relates to toolsadapted for applying fastenersemployed to secure together members accessible from only one side, andmore particularly to a tool especially adapted for applying fasteners ofthe type disclosed in U. S. patent to Anderson No. 2,051,066.

An object of the present invention is the provision of a novel, simple,and eflicient tool for quickly and securely applying fastenerscomprisapertures, the tw'o sleeves are rotated relative to eachother andthe threaded engagement therebetween causes the open end of the outersleeve B to move up over the enlarged portion Il of the shank of theinner sleeve A, thus expanding the open end of the outer sleeve B. Whenthe head Ill of the inner sleeve A and the open end of the outer sleeveB abut opposite sides of the members which it is desired to fasten ingtwo relatively rotatable members used to lo together, further relativerotation of the two secure members together where access can be sleevesis impossible and the members are then had to one side only, especiallyfasteners of the securely fastened together. type disclosed in theabove-mentioned patent. To facilitate rotation of the sleeve B, theright- The invention resides in certain details of con- Vhand closed endthereof is provided with suitable struction and combinations andarrangements of l .means adapted t0 reCeiVe a drivilll,r member. Irlparte, and further ebjeets and advantages Win the present instance theclosed end of the sleeve be apparent to those skilled in the art towhich B has an elongated slot |511 formed therein the invention relatesfrom the following descripadapted` to receive a suitably formed driverp0rten of the preferred embodiment thereof detion of a riveting tool.The head I0 of the sleeve scribed with reference to the accompanying Ais also provided With sui-table means adapted drawing forming a part ofthis specication in t0 be engaged by a i001 Which either holds the whichsimilar reference characters designate sleeve A stationary while thesleeve B is being corresponding parte and in which rotated, or as analternative, rotates the sleeve Fig. 1 is an elevation of a toolembodying the A relative to the sleeve B. In the fastener shown, presentinvention and showing the Same Con- 15116 head is plOVlded With SIOS isaadapted nected witha power actuating device; to receive a Spanner wrenchor screw driver. Fig, 2 is a longitudinal section taken throughOrdinarily. in applying a fastener of this type, the tool and through aportion ofthe power the sleeve A is held stationary while the sleevedevice; B is rotated, but alternatively, the sleeve A may Fig. 3 is enend elevation of the tool, viewed be rotated and the Sleeve B holdstationary,v or es indicated by the line 3 3 of Fig 2; both the sleevesmay be rotated in opposite di- Fig. 4 is an enlarged section, withportions in rections. The direction of the relative rotation elevation,of a fastener of the type adapted to between the two sleeves required toapply the be applied by the present tool, the fastener befastener isdetermined by whether the threaded ing shown in position ready forriveting; and connection therebetween is a rightor left-hand Fig. 5 isan end view of the fastener shown thread. in Fig, 4. The tool C which Ihave devised for applying The tool of the present invention isparticufasteners 0f the type above described in shown larly adapted forapplying two-part fasteners of in Figs. 1 and 2 0f the drawing and maybe astuthe type shown in U. S. patent to Anderson, No. ated by anySuitable driving means. In this 2,051,066. These fasteners comprise twoconceninstance I show the tool C connected with a tric sleeves A and B(see Figs. 4 and 5), the inner power device D for that purpOSe- Thispower sleeve. A of which is provided with a head I0 device may be one ofa commercially available and with a shank having an lenlarged portion vform, that iS to Soy, it may be electrically driven Il thereon adjacentte Such head, The outer 40 and may have a control switch Il thereon.This sleeve B is open at one end, which may be redevice may also have anadjusting means I8 ferred to as its outer or upper end, and is adaptedthereon for varying the maximum torque which to be threaded onto thereduced portion of shank Will deliveroi the inner sleeve A. The twosleeves when The tool C comprises a screw driver-like meminitiallyassembled form a shank of substantially uniform diameter adapted to beinserted through suitable aligned apertures in members I2 and I3 whichit is desired to secure together and to which access can be had` fromonly one side.

After the fastener is properly positioned in the ber or tool element I5and a Spanner-like member or second tool element I6, and an internallythreaded member or casing Hafer connecting the tool elements with thepower device D. The tool element I6 has a head portion 2B retained inthe casing I9 and may be in the form of a sleeve through which the toolelement I5 extends, the latter preferably being in the form of a rod orspindle which is slidable in the hollow element l5. The tool element I5is provided at its outer or lower end with a screwdriverlike portion 2|which is adapted for driving engagement in the slot I5a of the sleeve Bof the fastener when the tool is applied thereto. The tool element I6has a shank of non-circular crosssection by which it is held againstrotation in the casing I9 and is provided at its outer or lower end withscrew driver-like or spanner lugs 22 which are adapted for driving orholding engage'- ment in the slots Ita of the sleeve A of the 1fastener.

As shown in Fig. 2, the power device D may have an externally threadedbushing or stem 23 projecting therefrom and the tool C may be connec-tedwith the power device by screwing the casing power device D may alsohavea rotatable drive spindle 24 therein which carries a toothed clutchmember 25. A chuck member 25 is axially slidable in the bushing or stem23 and at its inner end carries a toothed clutch member 21 adapted forcooperation withthe clutch member 25. A spring 28 disposed between thedrive spindle 24 and the chuck member 26 normally holds the latter inthe position shown in Fig. 2 with the clutch members 25 and 2l indisengaged relation but permits inward movement of the chuck member 26to cause engagement of the clutch members when driving torque is -to bedelivered to the ltool C. The outer end of the chuck member 26 :of thepower device D is adapted for driving connection with the element I5 ofthe tool C and, for this purpose, may be provided with a non-circularrecess 25 in which a correspondingly shaped head 3Q of the tool elementI5 is seated. The tool element I5 maybe held seated in the recess 23 ofthe member 26 -by providing the latter with a ball-type locking detent3I adapted to engage in a peripheral groove 32 of the head 39.

The hollow tool element I6 is adapted to have limited axial shifting inthe casing I9 but is normally held in an extended position, as shown inFig.. 2, by a suitable compression spring 33 disposed in the casing andacting against the head 2t. tool element Iii and the head of the toolelement I5 may be prevented by providing the tool element I5 with asuitable recess or counterbore 34 of a size to receive the head 30.

When a two-part fastener of the type comprising the threadedly connectedsleeves A and B is to be riveted by means of my tool C, the fastener isfirst inserted into the aligned openings of the parts I2 and I3 to beconnected, as above explained, and th-e tool is then applied to thefastener by inserting the tool elements I5 and I6 thereinto. When thetool is applied to the fastener, the spanner lugs 22 of the tool elementI6 rst engage in the yslots Ia of the sleeve A and, after Ithis hastaken place, axial pressure is applied to the power device D causing thetool element I6 to move part way intothecasing I9 Kagainst the force ofthe compression spring 33. The relative axial movement thus producedbetween the tool elements I5 and I6 lcauses the screwdriver portion 2lof the tool element I5 to engage in the slot Ia of the sleeve B. Afterthe screw driver portion 2l of the tool element I5 engages in the slotI5a, further axial pressure I9 onto such stem or bushing. The

Interference between the inner end. of the applied to the power device Dcauses the' tool element I5 to recede into the casing I9, therebypushing the chuck member 25 axially inwardly against the action of thespring 28 and engaging the toothed clutch member 21 with the toothedclutch member 25. When this clutch engagement takes place, the toolelement I5 will be driven by the power device and will cause rotation ofthe sleeve B of the fastener. While the sleeve B is being thus rotated,the sleeve A will of the tool element IB and, as explainedv above,

" lsuch relative rotation between the sleeves of the fastener will causethe open end of the sleeve B elements I5 and IiiV of the tool C can bereadilyV disengaged from the fastener. Alternatively the fastener mayfirst be .applied to the tool and the driving connections on the latterengaged with the tool receiving means of the fastener and the wholesubsequently inserted into the aligned apertures in the members to beconnected.

From the foregoing description of :the preferred embodiment of theinvention, it Will be apparent that the objects of the inventionheretofore enumerated and others have -been accomplished; that anemcient, simple and reliable tool has been provided which is especiallyadapted for quickly and securely applying fasteners of the characterdisclosed in the aforesaid U. S. patent. While the preferred embodimentof the invention has been described with considerable detail, I do notwish to be limited to the lparticular construction shown, whichconstruction may be varied within the scope of this invention. It is myintention to cover hereby all adaptations and modifications andarrangements thereof that come within the practice of those skilled inthe art to which the present invention relates, and I particularly pointout ,and claim as my invention the following:

1. A tool for use with a fastener of the type having two concentric'members thre-adedly connected and provided with axially spaced toolreceiving means for imparting relative rotation thereto comprising ahousing, a tool element `slidably but non-rotatably supported in saidhousing with one end projecting therefrom, resilient meansV forcontinuously urging said tool element in a direction to project the samefrom said housing, a driving connection on the projecting end of saidtool element engageable withV the tool receiving means on the internalmember of the fastener, a second tool element slidably and rotatablysupported within the first-named tool element with one end thereofprojecting forwardly beyond the latter, a.` driving connectionV on theforwardlyprojecting end of said second tool element engageable with thetool receiving means on .the external member ofthe fastener, power meansfor rotating said second tool element, said power means comprisingy anormally disengaged clutch ladapted to be engaged by axial movement ofsaid second tool element, and resilient means for continuously urgingsaid second tool element in a direction'to project the same from saidr-stnamed `tool element and; to disengage the clutch.

2-. A tool for use with a fastener of the type having two concentricmem-bers threadedly connected and provided with axially spaced toolreceiving means for imparting relative rotation Vthereto comprising ahousing, a tool element slidably but non-rotatably supported in saidhousing with one end projecting therefrom, resilient means forcontinuously urging said tool element in a direction to project the-same from said housing, ra driving connection on the projecting end ofsaid tool element engageable with the tool receiving means of theinternal member of the fastener, a second tool element `slidably androtatably supported within the first-named tool element with one endthereof projecting forwardly beyond the latter, a driving connection onthe forwardly projecting end of said second tool element engageable withthe rtool receiving means of the external member of the fastener, powermeans for rotating said second tool element, said power meanscompri-sing la normally disengaged `clutch adapted to be engaged Aloyaxial movement of said second tool element, resilient means forcontinuously urging said second tool element in a direction to projectthe same from said irstnamed 'tool element :and to disengage the clutch,and an abutment on said second tool element adapted to limit themovement thereof relative to the external member of the fastener.

JOSEPH L. ADAMS.

